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Photographer: Paul Osmond  (see this users gallery)

A specimen of the chromodorididae nudibranch Ceratosoma tenue moves across the shallow rocky bottom of the ocean floor on the shore muck dive at Basura at Anilao in the Batangas region of the The Philippines. This is one of the two common species of Ceratosoma found in tropical waters, and is a very distinctive nudibranch with the prominent gill hood.
"Ceratosoma tenue can be characterized by the three mantle lobes on each side of the body. There is a large anterior lobe on either side of the head and a large lobe on each side by the gills. Between these is a smaller lobe which is joined by a ridge to the gill lobe, but not the head lobe. The edge of the lobes and the ridge joining the posterior lobes is usually outlined with a broken purple line." - Reference: Rudman, W.B., 1999 (September 29) Ceratosoma tenue Abraham, 1876. [In] Sea Slug Forum. Australian Museum, Sydney. Available from

· Date: Sat January 27, 2007 · Reference ID: /22006-08-14_15-02-25 · Views: 19867 ·
Keywords: nudibranchia nudi sea slug doridia se asia pacific mibini eudoridoidea tri lobes unusual pretty three


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Paul Osmond

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